Subtract 28/12 from 25/30
1st number: 25/30, 2nd number: 2 4/12
25/30 - 28/12 is -3/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
25/30 = 25 × 2/30 × 2 = 50/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
28/12 = 28 × 5/12 × 5 = 140/60 - Subtract the two like fractions:
50/60 - 140/60 = 50 - 140/60 = -90/60 - After reducing the fraction, the answer is -3/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30-28/12 25/30-56/12 25/60-28/12 25/30-28/24 75/30-28/12 25/30-84/12 25/90-28/12 25/30-28/36 25/30-28/60 25/30-28/84